The term Indian Philosophy (Sanskrit: Darshanas) may refer to any of several traditions of philosophical thought that originated in the Indian subcontinent including Hindu philosophy, Buddhist philosophy and Jain philosophy. Having the same or rather intertwined origins all of these philosophies have a common underlying theme of Dharma and similarly attempt to explain the attainment of emancipation. They have been formalized and promulgated chiefly between 1000 B.C to a few centuries A.D. with residual commentaries and reformations continuing up to as late as the 20 century by Aurobindo and ISKCON among others who provided stylized interpretations.
The characteristic of these schools is that they may belong to one Masthead and disagree with each other or be in agreement while professing allegiance to different banners. An example of the latter is the Non Vedia Jain and the Vedic Samkhya Schools both of which have similar ideas on pluralism; an example of the former would be the Dvaita and the Advaita schools both of whom are Vedic. However every school has subtle differences.